Converter.



G. W. & H. E. CONRAD. CONVERTER.

Arr'mon'mn FILED 311.29, 1912.

Patented Dec. 31,1912.

2 SHEETS-SHEET 1.

Attorneys [an/mt 1mm a direct, or a direct current into an alternating- "UNITED sra'rns PATENT OFFICE.

GEORGE W. CONRAD AND HARRY E. CONRAD, OF NANTY GLO, PENNSYLVANIA.

CONVERTER.

Specification of Letters Patent.

Patented Dec. 31, 1912.

Application filed April 29, 1912. Serial No. 694,012.

To all whom it may concern:

and HARRY E. CONRAD, citizens of the United States, residing at Nanty G10, in the county of Cambria, State of Pennsylvania, have invented a new and useful Con verter, of which the following is a specification. v

The present invention relates to improvements in converters, the primary object of the invention being the provision of a novel form of electromagnetically actuated means for converting an alternating current into a current, the apparatus when employed for converting an alternating current into a direct current being automatically due to the alternation of the current, while when employed for converting a direct current into an alternating current is actuated by a motor to properly oscillate the armature for providing the proper conversion.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and inv the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

. In the drawingsFigure 1 is a side elevation of the complete converter. Fig. 2 is a top plan view thereof. Fig; 3 is a side elevation taken from the opposite side to that of Fig. 1. Fig. 4: is an electrical diagram of the complete apparatus when connected for converting an alternating current into a direct current.

Referring to the drawings, the numeral 1 designates the base of the converter, which has mounted thereon, the two journaling standards 2 for the reception of the oscillatory shaft or armature 3. Disposed upon the base in spaced relation, are the two metal supports 4 and 4, which carry the respective pairs of electjromagnets 5 and G. The cores of the respective pairs of magnets 5 and 6 are disposed toward each other and in spaced relation so that the shaft or armature 3is passed centrally through the space between the cores of said ele'ctromagnets and i in a line eq fidistantlyfrom the center of posed at right angles in the space between the respective pairs of electromagnets.

Connected to and carried by the shaft or armature 3 in the space between the pairs of the electromagnets 5 and 6, are two electromagnets '7 and 7 the cores 8 and 8' of which are disposed in a line with the respective cores of the pairs of electromagnets 5 and 6, as clearly shown in Fig. 1, and the purpose of which will presently appear.

The two contact plates 9 and 9 are connected tothe inner end of the armature or shaft 3 and. are insulated therefrom by means of the block 10 of insulation, the bolts 11 being employed to properly connect the contact plates 9 and 9 relative together and upon the shaft or armature 3. The respec-- tive ends ofthese contact plates 9 and 9 are disposed in spaced relation-to the inner ends of the contact screws 12 and 12 carried by the two standards 13 and 13' connected to the base and upon opposite sides of the shaft 3 and contact plates 9 and 9, as clearly shown in Fig. 3. a

Connected to the base and to the upper their cores disposed in spaced relation above and below the respective contact plates 9 and 9, are the blow coils 14 and. 14.

Where the converter is employed for use in converting a direct toan alternating cu'rwith the crank arm 15 which has connected ably connected to a crank 17 operated by a posed that the rotation of the motor 18 Will consequently the electromagnets? and7.

In Fig. 4:, the alternating current gen erator 19 has led'therefrom, the'main cur rent conductors 2121. The conductors 22, 22 and 22 connect the alternating current electro-magnets 7-7 to the conductors 21 21. Led from the contact posts 1313' are the conductors 28 and 30'respectively, the conductor 30 leading to the coils 5'-'5.-., with a conductor 29, connecting the coils 5-5. to the coils 66, which latter coils have connected to them the conductor- 28.- The coils 55' and 6 6-', arelpolarized and -aretherefore excited by a direct current, and retain a constant polarity at their inner ends adjacent to the cores of the coils 7-7 such constancy depending upon the direction of thereto-a link 16, said link 16 being oper-v impart an oscillation to the armature3 and" end of the standards 13 and 13' and having j rent, the armature or shaft 3 is provided motor 18, said link and crank'being so disflow of the direct current. Therefore should an alternating current be caused to pass through the coils 7-7, the coils will be moved due to the cores 8, being south poles, while the cores 8 are north poles. If-the cores of coils 55, and 6 6', are for in-- stance south poles, an alternating current .is passed through the coils 7-7', and their ductors 21 and 31, while in contact with the post '13, to the contact points 12, thus directing the current throughkthe conductor 28,

. coils 6 6', the conductor 29, the coils 5 5,

' current and vice versa.

the conductor 30, the posts 13, and'th'e lower contact point 12 to the contacts 9'. When the armature or shaft? is moved in'the opposite direction, the current will flow in an opposite direction, that is to thecontacts 9, the lower contact point 12', the post 13, the conductor 28, the coils 66, the conductor 29, the coils 5 -5, the conductor 30, the post 13, the upper contact point 12 and line of force set up by these coils. 1414, are placed upon and insulated from the posts 1313, one above the other. These are affected by a direct current, so that the line of force set up by these coils l e-14,

will pass between the plates 9-4) and the" posts 1313 to prevent sparking which occurs when converting direct to alternating The conductors 34-35 are themains for the direct current after being converted from alternating current.

W'hile herein is described the invention in detail and is illustrated a combination embodying various features, which may at times be used to advantage, it is not the intention or desire of claimants to be limited to the particular arrangement shown or to 1. An electrical current converter, having a shaft mounted for oscillation, a pair of electromagnets carried by said shaft, two

pairs of electromagnets disposed in spaced relation, 'one pair upon each side of the electromagnets of the shaft and spaced therefrom to permit of theoscillationofthe electromagnets and the shaft, a pair of con tacts carried by and insulated from the shaft, collector plates disposed astride the contact plates and. to which the converted current conductors are connected, and two blow. co

coils, one above and one below the contact plates,' t he current to be converted being led to all of the electromagnets, the blow coils and the contact plates.

2.uThe combination an alternatiiig current source, and direct current lead conductors, of a mechanism for converting the alternating-into a direct current, comprising 'a shaft disposed to be oscillated due to the efi'ect of'the alternating current thereupon,

two superposed electromagnets connected to said shaft. twopairs of electromagnets disposed in spaced relation, one pair upon each side of the electromagnets of the shaft, said two pairs of 'electromagnets being connected to the source of alternating current and disposed to affect the electromagnets 'of the shaft to oscillate the shaft, said electromagnets of the shaft also being connected to said alternating current source, a pair of contacts carried by and'insulated from the shaft, said contacts being connected to the I respective leads from the alternating source, two collector plates disposed astride the contact plates andconnected-tothe respective leads for the direct current, said contact plates of theshaft being disposed .to alter- "nately engage the collector plates to convert the'alternating current led to saidcontact plates and to the collector plates into 'a di- .rcct current, and two blow. coils one above I and one below the contact plates connected in series and with the alternating current source.

In testimony'that' we claim the foregoing as our: own, we have hereunto affixedour signatures in the presence of two witnesses.

GEORGE W. CONRAD.

HARRY E. CONRAD.

' Witnesses JOHN -F. CONRAD,

J. R. ,Wnavnn, 

